| Issuer | Date | Desc | State | ||
| - | no image | Colombia | 2/7/2020 | empty sheet (#83920) | incomplete |
| - | no image | Colombia | 3/4/2020 | empty sheet (#83921) | incomplete |
| - | no image | Colombia | 3/20/2020 | Risaralda - A Model for the Conservation of Biodiversity, sheet of 10 types | incomplete |
| - | no image | Colombia | 6/6/2020 | empty sheet (#83924) | incomplete |
| - | no image | Colombia | 8/14/2020 | empty sheet (#83925) | incomplete |
| - | no image | Colombia | 9/16/2020 | empty sheet (#83922) | incomplete |
| - | no image | Colombia | 9/29/2020 | empty sheet (#83927) | incomplete |
| - | no image | Colombia | 10/15/2020 | empty sheet (#83928) | incomplete |
| - | no image | Colombia | 10/29/2020 | empty sheet (#83929) | incomplete |
| - | no image | Colombia | 10/30/2020 | empty sheet (#83930) | incomplete |
| - | no image | Colombia | 11/25/2020 | empty sheet (#83926) | incomplete |
| - | no image | Colombia | 11/27/2020 | empty sheet (#83932) | incomplete |
| - | no image | Colombia | 12/7/2020 | empty sheet (#83933) | incomplete |